• keep an open mind

• keep tabs on it

• keep a tight rein

• donkey's ages

• am I my brother's keeper

• keep one's nose clean

• keel over

• keep one's head above water

• all keyed up

• keep up appearances

• keeping up appearances

• keep one's shirt on

• keep him right

• keep the ball rolling

• keep it for a rainy day

• a Mikey Finn

• finders keepers

• keep sight of it

• come to a sticky end

• keep oneself to oneself

• keep it to oneself

• keep a weather eye open

• give him a thick ear

• break even

• keep lose one's temper

• talk turkey

• keep one's own counsel

• strike it lucky

• keep track of it

• keep on at him

• keep tabs on